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#!/usr/bin/env python
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import random
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import os.path as osp
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from glob import iglob
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from functools import reduce, partial
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from common import (get_default_parser, create_file_list, link_dataset,
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random_split, create_label_list)
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CLASSES = ('agricultural', 'airplane', 'baseballdiamond', 'beach', 'buildings',
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'chaparral', 'denseresidential', 'forest', 'freeway', 'golfcourse',
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'harbor', 'intersection', 'mediumresidential', 'mobilehomepark',
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'overpass', 'parkinglot', 'river', 'runway', 'sparseresidential',
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'storagetanks', 'tenniscourt')
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SUBSETS = ('train', 'val', 'test')
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SUBDIRS = tuple(osp.join('Images', cls) for cls in CLASSES)
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FILE_LIST_PATTERN = "{subset}.txt"
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LABEL_LIST_NAME = "labels.txt"
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URL = ""
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if __name__ == '__main__':
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parser = get_default_parser()
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parser.add_argument('--seed', type=int, default=None, help="Random seed.")
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parser.add_argument(
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'--ratios',
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type=float,
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nargs='+',
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default=(0.7, 0.2, 0.1),
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help="Ratios of each subset (train/val or train/val/test).")
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args = parser.parse_args()
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if args.seed is not None:
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random.seed(args.seed)
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if len(args.ratios) not in (2, 3):
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raise ValueError("Wrong number of ratios!")
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out_dir = osp.join(args.out_dataset_dir,
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osp.basename(osp.normpath(args.in_dataset_dir)))
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link_dataset(args.in_dataset_dir, args.out_dataset_dir)
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splits_list = []
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for idx, (cls, subdir) in enumerate(zip(CLASSES, SUBDIRS)):
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pairs = []
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for p in iglob(osp.join(out_dir, subdir, '*.tif')):
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pair = (osp.relpath(p, args.out_dataset_dir), str(idx))
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pairs.append(pair)
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splits = random_split(pairs, ratios=args.ratios)
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splits_list.append(splits)
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splits = map(partial(reduce, list.__add__), zip(*splits_list))
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for subset, split in zip(SUBSETS, splits):
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file_list = osp.join(
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args.out_dataset_dir, FILE_LIST_PATTERN.format(subset=subset))
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create_file_list(file_list, split)
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print(f"Write file list to {file_list}.")
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label_list = osp.join(args.out_dataset_dir, LABEL_LIST_NAME)
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create_label_list(label_list, CLASSES)
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print(f"Write label list to {label_list}.")
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